Draft-controlling damper



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IN VEN TOR Hos/nan ATTORNEY 7 fit Patented Get. 9, 1923.

JOZEF KOSIMTAN, OF M titanic ASPETH, NEW YORK.

DRAFT-CONTROLLING DAMPER.

Application filed April 18,

To (LN 7mm it may concern:

Be it known that l, Joznn KosMAN, a citizen, of Poland, residing at aspeth, OIIg island. in the county of Queens and State of New York, have invented certain new and useful Improvements in Draft-Controlling Dampers, of which the following is a specification.

The main object of this invention is the provision of means for regulating the passage of pro-heated air and gases into a chimney pipe and returning the same through a blower to the furnace as desired.

This object is attained by the novel construction and arrangement of parts hereinafter described and shown in the accompauying drawing. forming a material part oi this disclosure, and in which Figure 1 is a front elevational- View of a heating furnace showing the application of an embodiment of the invention.

Figure 2 is a longitudinal fragmental sectional view of the smoke pipe showing the compound damper and operating means drawn to an enlarged scale.

Figure 3 is a transverse sectional view of the same.

Referring to the drawing in detail, the numeral l0 designates in general the front of a conventional heating furnace having ash pit doors 11 and fuel doors 12, each closing separate openings leading into their respective compartments; and in the space above the fuel chamber suitable elements may be installed tor heating purposes.

Secured to the top of the furnace 10, by a flange 13. is a smoke pipe 14:, one end enter ing into the combustion chamber and the other end fitted with an elbow 15 connecting another pipe 16 which enters into a chimney l'luc (not shown).

A rotary tan or blower 17 is located at any desired distance from the furnace and is driven by power, obtained from any conventional source of supply, and is connected, at its outlet, with a pipe 18, entering into the ash pit through the bottom of the furnace 1.0.

nother pipe 19 is connected at one end to 1922. Serial N0. 555,124.

the intake of the rotary fan 17, extending upwardly. to engage a return elbow 20, the other end of which enters into the upper side oil? the smoke pipe 16.

Conveniently arranged in the pipe 19 is a simple disc or butterfly damper manually operated by the T shaped handle 21, extending outward through the pipe.

Another damper arranged in the smoke pipe 16 between the entering point of the elbow 20 and the chimney is composed of a circular plate formed in sections 22 and 23, connected together at a point below the center of the circle, by a pair of hinges 24. The upper member 23 is pivoted in the pipe by trunnions 25 and 26, and the damper may be operated as a disc or butterfly damper by means of chains or wires 27 and 28, depending from the ends of a bell-crank lever 29 secured on the trunnions 25 adjacent the outside of the pipe 16.

A chain or cable 32 is attached to the lowermost part of the member 22 and is carried angularly upward, through the top of the pipe and over a grooved wheel 33, rotatably held in a forked bracket 34- fiXed to the outside of the pipe 16.

A slight pull on the ring 85 attached to the cable 32 causes the damper member 22 to open, the other adjacent member 28 remaining undisturbed.

Attached to the lower portion 22 of the damper, are a pair of weights 30 and 31 arranged to cause the damper to close by gravity when the pull on the cable 32 is released.

If it is desired, a free passage of air and gas into the chimney is effected by opening the pivoted damper 23 of the smoke pipe 16 and closing the damper 21 pivoted in the blower supplv pipe 19, thereby cutting off the air supply from the blower and interrupting the circulation of air in the system.

As changes in construction could be made within the scope of the invention, it is intended that all matter contained in the foregoing description or shown in the drawing, shall be interpreted as illustrative and not in a limiting sense.

Having thus described my in ention, what I claim as new and desire to secure by Let ters Patent, is

The combination With a pipe, of a damper in said pipe, said damper consisting" of a cir- 5 cular plate formed in sections, one section being of greater area than the other, pivotal connections on the larger of sald sections engaging the Wall of said pipe, hinges connecting the plate sections, counterweiglits 0n the smaller oi said sections, and a flexible cord-like element engaging the lower edge of said smaller plate section, said flexible element errtendin; outwardly for manual operation.

In Witness whereof I aiiix my signature.

JOZEF KOSMAN. 

